/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

 * @test

 * @summary Create daemon and non-deamon threads.

 *          Check the correctness of thread's status from jstack.

 * @library /test/lib/share/classes

 * @library ../share

 * @build common.*

 *

 * @run main/othervm -XX:+UsePerfData DaemonThreadTest

 */

import common.ToolResults;

import utils.*;

public class DaemonThreadTest {

    static class NormalThread extends Thread {

        NormalThread() {

        }

        @Override

        public void run() {

            Utils.sleep();

        }

    }

    static class DaemonThread extends Thread {

        DaemonThread() {

            setDaemon(true);

        }

        @Override

        public void run() {

            Utils.sleep();

        }

    }

    public static void main(String[] args) throws Exception {

        testNoDaemon();

        testDaemon();

    }

    private static void testNoDaemon() throws Exception {

        testThread(new NormalThread(), "");

    }

    private static void testDaemon() throws Exception {

        testThread(new DaemonThread(), "daemon");

    }

    private static void testThread(Thread thread, String expectedType) throws Exception {

        // Start the thread

        thread.start();

        // Run jstack tool and collect the output

        JstackTool jstackTool = new JstackTool(ProcessHandle.current().getPid());

        ToolResults results = jstackTool.measure();

        // Analyze the jstack output for the correct thread type

        JStack jstack = new DefaultFormat().parse(results.getStdoutString());

        ThreadStack ti = jstack.getThreadStack(thread.getName());

        if (!ti.getType().trim().equals(expectedType)) {

            throw new RuntimeException("incorrect thread type '" + ti.getType() + "' for the thread '" + thread.getName() + "'");

        }

    }

}